<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link href="/tow.css" rel="stylesheet">  
</head>
<body>
   <div class="one">
    <div class="tow">
        <a><返回</a>
        <h1 class="o">登录</h1>
    </div>
   </div>
   <div class="three">
        <label>用户名</label>
        <input type="text" placeholder="请输入用户名">
    <div class="three">
        <label >密码</label>
        <input type="password" placeholder="请输入密码">
    </div>
    <div class="nav">
    </div>
    <button type="button" class="nav1">确认</button>
    <button type="button" class="nav2">取消</button>
   </div>
</body>
</html>